Estimation and Computation
Addition
Models
Expanded Algorithm
Standard Algorithm
Subtraction
Models
Expanded Algorithm
Standard Algorithm
Multiplication
Models
Partial Products
Expanded Algorithm
Standard Algorithm
Lattice Method
Division
Models
Sharing Method
Types of Estimation
Quantity
Measure
Computational
Rounding
Compatible Numbers
Front-End Estimation
Clustering
Mental Computation
Count on, Count Back
Compatible Numbers
Break Apart Numbers
Compensation
Equal Additions